Hi! I think that would be interesting to include the battle of Golpayegan on 28 abril of 224, in which the last arsacid king Artabanus IV was defeated by Ardashir and his son Shapur I. Yes I know that battle was several years before the first year of the mod, but it would be awesome can play this fundamental battle of the history of Iran, and the rest of the Middle Orient. Besides for the arsacid units you could ask to the Clasical Age mod permission to use their fantastic phartian units. Here some examples:
Zradhan Spahbade : Parthian Royal bodyguards : With no doubt the best equipment, training and skills among all nobles, they had the chance to be knights appointed to the protection of the king himself. They were, at the beginning of the empire, well equipped, having some intriguing metal masks since the beginning, mostly to defend themselves against arrows. Even their hands were covered by pieces of metal and chainmail. For the legs, the lorica hamata was relatively cheap and practical. Like all Parthian nobles, they were highly versatile, beeing archers, spearmen with the long kontos, and swordsmen of great skills and fierciness.
Pushtigban (#1 old appearance #2 new): These impressive and famous units were elite noble chosen cataphracts, or Royal cataphracts. They were extremely heavy, beeing the tanks of the ancient world. The combined the weight of their entirely cladded, chosen, crossed breeds of Nisean horses and their own body armour, to be the heavyest cavalry unit in the world by far. This was probably sufficient, even at relatively low speed, to devastating any heavy infantry line, including the seleucid phalanxes. Entirely covered, using a kontos for the charge, at short range, and an heavy mace made of steel and lead for the melee, they were pure infantry breakers, pushing with a great and unstoppable blow and then hammering with no mercy the troops in disarray. All this, of course, was performed after a very long skirmishing and a non-ending rain of arrow performed during a whole day, if not several, by day and by night, by thousands of uncatchable horse-archers... The Pushtigban then always delivered the "coup de grāce" of crushing, decisive blow. Performed at great scale, they wiped out the Seleucids, disintegrating the legions of Crassus, after beeing crushed themselves by the Sassanids.
Grivpanvar i Palhavanig : Parthian royal late bodyguards : These late elite Royal bodyguards were now a very prestigious unit of a Royal, near_imperial cavalry, as the parthian late empire was quite bigger than any empire in the world, having compltely expelled the seleucids anywhere but on a few pockets of near-puppet kings... As beeing successors of the Persians, and also an Hellenized elite, masters of asia from Palestine to the Indus, their best elite units have been probaby wonderfully equipped, in a more somptuous way than former Parthian cataphracts. The use of the bow, the Kontos, the mace and sword, were only permitted by a retinue looking after their masters suits, ready to change their tired horse and give them new arrows or different weapons if needs, in the hearth of the battle.
Link of the mod page: http://www.ancient-battles.com/catw/parthia.htm
On other hand I think you should include Aspagur I Iberia, the arsacid king of Iberia, within the characters of the armenia kingdom. Here the text of wikipedia:
Aspagur I (Georgian: ასფაგურ I, Latinized as Aspacures), of the Arsacid dynasty, was a king of Iberia (natively known as Kartli; ancient Georgia) from 265 to 284.
According to the medieval Georgian chronicles, Aspagur was either 23rd or 25th king of Iberia and, together with the Armenians, resisted the Sassanid Iranian expansion into the Caucasus. His reign probably coincided with the temporary reassertion of Roman control of the region under emperors Aurelian and Carus. He is reported to have been defeated by an Iranian invasion and died in exile in Alania. According to the chronicle Life of the Kings, he was last in his line, but his daughter, Abeshura, is claimed to have been married to Mirian, who would succeed him on the throne and become the first Georgian king to espouse Christianity.[1]